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DerKrebs [107]
3 years ago
7

If the theoretical yield of a reaction is 0.132 g and the actual yield is 0.131 g , what is the percent yield?

Chemistry
1 answer:
Zepler [3.9K]3 years ago
6 0
I believe the percent yield is 99.24%.
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What best describes a solution ?
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During the titration of a weak acid and a strong base, you would expect the ph at the endpoint of titration to be ____.
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Determine the mass of CuSO4 • 5H20 that must be used to prepare 250mL of 2.01 M CuSO4(aq).
mario62 [17]

Given parameters:

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Mass of CuSO₄.5H₂O = ?

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             CuSO₄.5H₂O  →   CuSO₄ + 5H₂O

Now that we know the expression, it is possible to solve for the unknown mass.

First find the number of moles of CuSO₄;

         Number of moles  = Concentration x Volume

Take 250mL to L so as to ensure uniformity of units;

           Volume  = 250 x 10⁻³L

  Input the parameters and solve for number of moles;

        Number of moles  = 250 x 10⁻³  x  2.01 = 0.5mol

From the equation;

             1 mole of CuSO₄ is produced from 1 mole of CuSO₄.5H₂O  

So  0.5 moles of CuSO₄ will be produced from 0.5 moles of CuSO₄.5H₂O

Now let us find the molar mass of CuSO₄.5H₂O = 63.6 + 32 + 4(16) + 5(2x1 + 16)  = 249.6g/mole

Mass of CuSO₄.5H₂O = number of moles x molar mass

                                      = 0.5 x 249.6

                                     = 124.8g

The mass of CuSO₄.5H₂O is 124.8g

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3 years ago
In your own words, explain the periodic law.
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    States that the properties of elements are periodic or recurring and are correlated to their atomic number.

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